Join Vishnu Som and Shiv Aroor as they dive deep into the historic test of the K4 sub-launched ballistic missile! 

India's Naval Nuclear Deterrent just levelled up! 

A MASSIVE NOTAM declared off Vizag coast! This is BIG.

What does it mean for India's nuclear submarine programme? 

Have our SSBNs finally come of age? 

This could be India's most significant ballistic missile test EVER.

We tell you why!